Valve construction for internal-combustion engines



Mar. 3, 1925. 1,528,568

R. M. RooF VALVE CONSTRUCTION FOR INTERNAL COMBUSTION ENGINES Filed Oct. 5, 1921 s Sheets-Sheet 1 *TIQ. 1

INVENTOR. Eoaeer r1, Eaafi:

A TTORNEYS RUCTION FOR INTERNAL COMBUSTION ENGINES VALVE: CONS'I Filed Oct. 5, 1921 3 Sheefs-Sheet 2 INVENTOR. E0568)" (*7. 5001':

ATTORNEYS 1,528,568 R. M. ROOF VALVE CONSTRUCTION FOR INTERNAL COMBUSTION ENGINES Filed 001;. 5, 1921 3 Sheets-Sheet 3 Mar. 3. 1925.

| 3 I l I l .l L l I I l I l I l I I I fi I I I i l I I I I INVENTOR.

Boater/'7. Ecol.

ATTQRNEYS IIIIII I I I I Patented Mar. 3, 1925.

UNITED STATES PATENT OFFICE.

ROBERT M. ROOF, OF ANDERSON. INDIANA, ASSIG-NOR TO THE LAUREL MOTORS COR- PORATION, O'F ANDERSON, INDIANA, A CORPORATION.

VALVE CONSTRUCTION FOR INTERNAL-COMBUSTION ENGINES.

Application filed October 3, 1921.

To all whom it may concern:

Be it known that I, ROBERT M. Roor, acitizen of the United States, and a resident of Anderson, county of Madison, and State of Indiana, have invented a certain new and useful Valve Construction for In ternal-Combustion Engines; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like numerals refer to like parts.

This invention relates to a valve construction for an internal combustion engine.

The chief object of this invention is to provide a valve operating mechanism of an internal combustion engine with an improved support.

The chief feature of the invention con sists in providing a lubricated support for the valve operating mechanism of an internal combustion engine.

Another feature of the invention consists in the particular arrangement of the parts of the lubricated valve support, whereby one valve support is adapted to be associated with the valve operated mechanisms for a plurality of cylinders, each cylinder being provided with two or more valves.

The full nature of the invention will be understood from the accompanying drawings and the following description and claims.

In the drawings, Fig. 1 is a top plan View of the invention applied to an overhead valve construction, parts being broken away to show other parts in section. Fig. 2 is a side elevational view of an internal combustion engine, cylinder head and the valve operating mechanisms associated therewith. Fig. 3 is'an end elevational view of the invention applied to the cylinder head of an internal. combustion engine. Fig. 4 is a cross'sectional view taken on line 44 of Fig. l and illustrates the parts shown in Fig. 3 and their association with the head. Fig. 5 is an enlarged elevational view of the valve operating mechanism support, parts being broken away to show the invention in section. Fig. 6 is an enlarged end elevational view of the valve operating mechanism support.

In the drawings 10 indicates the cylinder of an internal combustion engine provided with a head 11 which may or may not be detachable as desired. Said head is provid Serial No. 504,904.

sociated with said stem 24 is the usual coiled sprin 25 and spring retainer 26. The stem 24 carries an upright bearing member 27 in the case of the exhaust valves while the upright 28 is carried by the stem 24 of the intake valves. The upright 27 terminates in a ball 29; while the upright 28 terminates in a head 30. The ball 29 is receivable by a socket 31; while the head 30 is engageable by an arcuate portion 32. As shown clearly in Fig. 4, the means for reciprocating the uprights 27 and 28 and the stems 24 to open the valves 23 in opposition to the springs 25 constitute rocker arms 33 and 34 respectively. It will be noted that each rocker arm 33 is provided with two upright engaging portions 35; while each rocker arm 34 is provided with two upright engaging portions 36. In each instance the rocker arm constructions are provided with but a single oppositely extending portion, and herein said single portions are oppositely positioned with respect to the respective rocker arms 33 and 34. Thus, the rocker arm 33 is provided with the actuating portion 37; while the rocker arm 34 is provided with the actuating portion 38, and said actuating portions terminate in the same plane, so that a pair of push rods 39 and 40 respectively are adapted to actuate the portions 37 and 38 to reciprocate the upright portions 27 and 28. Herein each portion 37 and 38, see Fig. 4, adjustably supports, by means of the nut 41, a contact member 42 which is provided with a spherical head 43 seatable in a spherical socket 44 carried by each of the push rods 39 and 40.

The rocker arms 33 and 34 are supported by spindles 45 and 46 respectively, and said spindles lie substantially parallel to each other and are supported in fixed relation, the spindle 45 being positioned above the spindle 46 and farther from the plane includingthe push rods 39 and 40. Thus each of the spindles is adapted to support the rocker arms such that said rocker arms will be supported midway between the actuating endand the actuatable end.

From Figsl and 2 it will be noted that the spindles are supported in said fixed and parallel relation by means of a supporting bracket having the base portion 47 provided with reenforcing ribs 48 which support a pair of semi-circular groove bearings 49. Associated with said; groove bearings is a grooved cap member 50 suitably secured to the base portion by means of the bolts 51. It will be noted that the base bracket means supports the spindles and 46, so that the spindles extend from each side of said bracket, and, therefore, each spindle is adapted to support two rocker arm constructions for two adjacent cylinders.

Reference will now be had to Figs. 5 and 6, wherein each of the spindles and 4G is shown provided with a passage therein, thereby forming hollow spindles. Each of the bearing portions of said spindles is suitably grooved longitudinally as at 53, and said grooves are connected to the channel 52 by the ducts 54. Each end of the tubular'spindle or 46 is closed by the threaded bolt 55, and herein said bolt supports a washer 56 which is adapted to retain the rocker arms 33 or 34 upon said spindle. The means for supplying lubricant to the hollow spindle or channel 52 includes a duct 57 which communicates with a similar duct 58 in-the cap 50, and said duct 58 is threaded to receive the caps 59. It will be understood that lubricant is supplied to the hollow spindles by removing the plugs 59 and forcing lubricant into said channel The invention claimed is:

l. A valve construct-ion for a m'ulti-cylinder internal combustion engine having a plurality of valves for each cylinder, including a supporting base bracket positioned between-a pair of said cylinders, a pair of hollow parallel bearing spindles each supported by said base bracket intermediate the ends, a rocker arm on each end of the spindle for actuating the valves, and means for retaining lubricant in said spindles.

2. Avalve construction for a multi-cylinder internal combustion engine having at least four valves for each cylinder, including a supporting base bracket positioned between a pair of said cylinders, a pair of hollow parallel bearing spindles each supported by said base bracket, a rocker arm on each end of each spindle for actuating a plurality of valves, and means for retaining lubricant in said spindles.

3. A valve construction for a multi-cylinder internal combustion engine having a plurality of valves for each cylinder, a'bracc bracket, a pair of hollow parallel openended bearing spindles each supported by said base bracket intermediate its ends, a rocker arm on each of said spindles adjacent the base bracket mounting for actuating said valves, and a single retainer at each end of the spindles for retaining said rocker arm thereon and for simultaneously retaining the lubricant in said spindle.

4. A valve construction for a multi-cylinder internal combustion engine having a plurality of valves for each cylinder, a brace bracket a pair of hollow parallel open-ended ROBERT M. ROOF. 

